Lamipanel or similar for lining shower walls - where to buy cheap? (Sydney)

I am doing a quick botch job on our bathroom, which has REALLY bad leaks in the shower. Tiles are falling off, timber frame is rotted out something dreadful… a total disaster zone! The house is getting knocked down in a year, so I am looking at a really cheap and cheerful way of covering up the walls and waterproofing them

Since we only have one bathroom and a young family, I cannot have the shower out of action for days while I put new cement sheeting up and then tile and grout. Plus, I know I better not to look at the timber… if I touch anything the whole thing will probably fall down!

I've got a shower base from eBay for $30, so that solves the floor. Trying to find Lamipanel or similar product that I can glue straight over the top of what is there.

Thanks attract - yeah, I know about the waterproofing… that is why the situation has occurred… a builder didn't waterproof properly!!

I am not fixing or waterproofing anything… I want to go straight over the top of the rotten walls and tiles that have fallen off. It's not worth doing proper repairs on a house that will be pulled down in less than a year. I cannot do waterproofing anyway as the bathroom / shower is in continual use with a young family and no bath.

Alternatively I was considering getting one of those "shower enclosures" made of fibreglass.. or something this…